USGS Surface Water for USA: Streamflow Measurements

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Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

Streamflow Measurements for the Nation

342507118380301 SANTA CLARA R 0.3 MI BL CASTAIC C NR VALENCIA CA

Los Angeles County, California

Hydrologic Unit Code 18070102

Latitude 34°25'07", Longitude 118°38'03" NAD27

Drainage area 606 square miles

Gage datum 925 feet above NGVD29

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U.S. Department of the Interior | U.S. Geological Survey
Title: Surface Water for USA: Streamflow Measurements
URL: https://waterdata.usgs.gov/nwis/measurements?

Page Contact Information: California Water Data Support Team
Page Last Modified: 2025-09-05 15:03:43 EDT
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